Special Steel ASTM1020 Carbon Structural Steel

Special Steel ASTM1020 Carbon Structural Steel System 1

Special Steel ASTM1020 Carbon Structural Steel

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 30 m.t.

Supply Capability:: 10000 m.t./month

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Product information:

1.Chemical performance:

Model	C	Si	Mn	P	S
GB45	0.42-0.50	0.17-0.37	0.50-0.80	0.030	0.030

2.Mechanical performance:

Strength of extension	600MPA
Yield point	355MPA
Elongation	16%
Contractibility rate	40%
Impacting energy	39J

3.Size tolerance:

Length tolerance	+100mm/-0mm
diameter tolerance	+/-1.0mm
Straightness	Max 6mm/m

specification	Outer Diameter:14mm-180mm
Standard	GB,JIS,DIN,AISI,ASTM,ISO,NF
Certificate	ISO9001-2008
Application	A) General service industries (petroleum, food, chemical, paper, fertilizer, Fabric, aviation and nuclear) B) Fluid, gas and oil transport C) Pressure and heat transmission D) Construction and ornament E) Boiler heat exchangers
Test	flaw detection According to customers' requests
Processing	Cold Drawn/Cold Rolled/Hot Rolled
Packing	as your requirement
trade term	FOB; CNF; CIF PORT: TIANJIN, China
payment	T/T ,L/C,D/P
delivery time	Within 15 DAYS

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Special Steel ASTM1020 Carbon Structural Steel

Shipping

1. FedEx/DHL/UPS/TNT for samples, Door-to-Door;

2. By Air or by Sea for batch goods, for FCL; Airport/ Port receiving;

3. Customers specifying freight forwarders or negotiable shipping methods!

Delivery Time: 3-7 days for samples; 5-25 days for batch goods.

Payment Terms

1.Payment: T/T, L/C, Western Union, MoneyGram,PayPal; 30% deposits; 70% balance before delivery.

2.MOQ: 1pcs

3.Warranty : 3 years

4.Package Informations: 1) EXPORT, In 20 feet (GW 25 ton) or 40 feet Container (GW 25 ton)

2)as customer's requirement

Why choose us?

(1) The leading exporter in China special steel industry.

(2) Large stocks for various sizes, fast delivery date.

(3) Good business relationship with China famous factories.

(4) More than 7 years steel exporting experience.

(5) Good after-sales service guarantee.

Q:What are the common challenges in heat treatment of special steel?: To achieve the desired material properties, careful attention must be given to several challenges encountered in the heat treatment of special steel. One primary challenge revolves around the necessity for meticulous temperature control throughout the heating and cooling stages. Special steels typically have specific temperature ranges for heat treatment that must be strictly adhered to in order to attain the desired microstructure and mechanical properties. Failing to maintain precise temperature control can result in inadequate or inconsistent heat treatment, ultimately leading to suboptimal material performance. Another challenge lies in the potential distortion or warping of the steel components during the heat treatment process. Special steels often possess intricate designs or complex shapes, making them more susceptible to distortion when subjected to high temperatures. This distortion can have adverse effects on the overall quality and dimensional accuracy of the final product. Consequently, careful consideration must be given to the selection of suitable heating and cooling methods, as well as the utilization of fixtures or jigs to minimize distortion. Moreover, special steels may contain alloying elements that significantly influence the heat treatment process. Elements like chromium, molybdenum, or vanadium can alter the steel's hardenability, tempering response, or transformation behavior. Their presence can introduce additional challenges when determining the optimal heat treatment parameters, necessitating adjustments to heating and cooling rates, soak times, or quenching media. Lastly, achieving uniformity in heat treatment across a batch of special steel components can prove to be challenging. Variations in size, shape, or composition within a batch can result in inconsistent heat treatment outcomes. Controlling the heating and cooling rates, ensuring proper circulation of the heat treatment media, and implementing effective process monitoring techniques are essential in achieving consistent and uniform material properties. In conclusion, the heat treatment of special steel encompasses challenges such as precise temperature control, distortion/warping, the influence of alloying elements, and achieving uniformity across a batch. Successfully addressing these challenges requires a comprehensive understanding of the steel's composition, meticulous process planning, and the utilization of appropriate process controls and monitoring techniques.

Q:What are the different renewable energy grades of special steel?: The renewable energy industry commonly utilizes various grades of special steel. These grades are specifically engineered to endure the demanding conditions and needs of renewable energy applications. Stainless steel is one of the most prevalent grades of special steel employed in renewable energy. It is renowned for its ability to resist corrosion, making it an excellent choice for offshore wind turbines and solar panel frames that are exposed to moisture and saltwater. It is also utilized in geothermal power plants, where harsh temperatures and corrosive environments exist. Another grade of special steel utilized in renewable energy is high-strength low-alloy (HSLA) steel. This type of steel possesses a higher strength-to-weight ratio, rendering it suitable for lightweight structures requiring high strength, such as wind turbine towers or support structures for solar panels. Additionally, advanced high-strength steel (AHSS), commonly used in the automotive industry, can also find application in renewable energy. AHSS offers exceptional strength, durability, and impact resistance, making it ideal for components like wind turbine blades or gears. Furthermore, weathering steel is a grade of steel frequently employed in renewable energy applications exposed to outdoor elements. This type of steel develops a protective layer of rust, which prevents further corrosion and obviates the need for additional coatings. It is commonly found in solar panel support structures, transmission towers, and other outdoor equipment. Ultimately, the choice of the appropriate grade of special steel for a particular renewable energy application relies on several factors, including the type of renewable energy source, the installation environment, and the project's specific requirements.

Q:What are the different methods of surface electropolishing for special steel?: There are several different methods of surface electropolishing for special steel, each with its own unique advantages and applications. 1. Immersion Electropolishing: This method involves immersing the special steel components in an electrolyte bath and passing a direct current through the solution. The current causes the surface of the steel to dissolve, resulting in a smooth and polished finish. Immersion electropolishing is commonly used for large and complex parts, as it can provide uniform surface improvement on all exposed areas. 2. Electrolytic Electropolishing: This technique involves applying a direct current directly to the surface of the special steel component using an electrode. The current causes the surface to dissolve, resulting in a smooth and reflective finish. Electrolytic electropolishing is often preferred for smaller or intricate parts, as it allows for precise control over the process and can target specific areas that require improvement. 3. Reverse Pulse Electropolishing: This method utilizes a combination of direct and reverse current pulses to achieve a superior surface finish. The reverse current pulses help to reduce the surface roughness and eliminate any embedded particles or contaminants. Reverse pulse electropolishing is particularly useful for special steel components that require enhanced corrosion resistance and improved cleanliness. 4. Magnetic Field-Assisted Electropolishing: This technique involves applying a magnetic field to the electropolishing process, which can improve the polishing rate and surface finish. The magnetic field aligns the electrical current and enhances the removal of material, resulting in a smoother and more uniform surface. Magnetic field-assisted electropolishing is often used for special steels that are difficult to polish or have complex geometries. 5. Flow-Assisted Electropolishing: This method involves using a flowing electrolyte solution to enhance the electropolishing process. The flowing solution helps to remove dissolved material from the surface and prevents the formation of gas bubbles, resulting in a smoother and more efficient polishing. Flow-assisted electropolishing is commonly used for large or flat special steel components that require a high-quality surface finish. Overall, the selection of the appropriate method of surface electropolishing for special steel depends on the specific requirements of the components, such as size, geometry, and desired surface finish. Each method offers its own benefits and considerations, and consulting with an experienced electropolishing specialist is recommended to determine the most suitable approach.

Q:How is special steel tested for quality?: Special steel is tested for quality through various methods such as chemical analysis, mechanical testing, and non-destructive testing. Chemical analysis involves examining the composition of the steel to ensure it meets the specified standards and requirements. Mechanical testing involves evaluating the steel's strength, hardness, and other mechanical properties. Non-destructive testing methods like ultrasonic testing or magnetic particle inspection are used to detect any internal defects or flaws in the steel without causing any damage. These rigorous testing procedures ensure that special steel meets the desired quality standards before it is used in various applications.

Q:What are the requirements for special steel used in industrial equipment manufacturing?: To ensure the suitability of special steel for use in demanding applications in industrial equipment manufacturing, certain requirements must be met. These requirements include: 1. Exceptional strength: Given the heavy loads that industrial equipment often encounters, special steel must possess superior strength properties to withstand these forces. It should exhibit high levels of yield strength, tensile strength, and hardness to prevent deformation or failure. 2. Resistance to corrosion: Industrial environments are frequently subject to corrosion caused by exposure to chemicals, moisture, or extreme temperature fluctuations. Therefore, special steel used in such applications should possess excellent corrosion resistance to prevent degradation and ensure long-term performance. 3. High resistance to wear: The friction, abrasion, and impact experienced by industrial equipment often lead to significant wear. Consequently, special steel needs to exhibit exceptional wear resistance to maintain its integrity and prevent premature failure. 4. Toughness and resistance to impact: Industrial settings can subject equipment to sudden shocks, impacts, or vibrations. To withstand such events, special steel should demonstrate good toughness and resistance to impact, absorbing energy and resisting fracture or cracking. 5. Ability to withstand high temperatures: Certain industrial processes expose equipment to high temperatures or rapid temperature changes. Special steel must exhibit excellent heat resistance, retaining its strength, hardness, and other mechanical properties even at elevated temperatures. 6. Ease of machining: Special steel used in industrial equipment manufacturing should be easy to machine, facilitating the fabrication process. It should allow for simple cutting, drilling, welding, and other machining operations without excessive tool wear or damage to the material. 7. Dimensional stability: Equipment components must maintain their shape and dimensions under various operating conditions. Special steel needs to exhibit dimensional stability to prevent warping, distortion, or dimensional changes that could impact the performance or assembly of the equipment. By meeting these requirements, special steel used in industrial equipment manufacturing can endure harsh conditions, deliver reliable performance, and have a long service life. Ultimately, this contributes to the overall efficiency and productivity of industrial processes.

Q:What are the challenges in welding special steel?: One of the main challenges in welding special steel is its high carbon content, which can result in increased hardness and brittleness. This requires careful control of the welding process, including preheating and post-weld heat treatment, to prevent cracking and ensure proper weld strength. Additionally, special steels often have alloying elements that can influence the weldability, such as chromium, nickel, or molybdenum, requiring specific filler materials and welding techniques. Overall, the challenges in welding special steel lie in achieving a strong and defect-free weld while maintaining the desired mechanical properties of the steel.

Q:How is special steel used in the construction industry?: Special steel is used in the construction industry for a variety of purposes such as reinforcing concrete structures, constructing high-rise buildings, manufacturing heavy machinery, and producing durable and corrosion-resistant components. It provides strength, flexibility, and longevity to construction projects, ensuring their safety and structural integrity.

Q:Is special steel recyclable?: Yes, special steel is recyclable.

Q:How does the demand for special steel vary across different regions?: The demand for special steel varies across different regions due to several factors such as industrial development, infrastructure projects, and manufacturing activities. Regions with robust manufacturing sectors and infrastructure development tend to have higher demand for special steel as it is used in various applications like automotive, construction, and machinery. Additionally, regions with a higher focus on technological advancements and innovation may also have a greater demand for special steel due to its unique properties and capabilities. However, regions with limited industrial activities or dependence on specific sectors may exhibit lower demand for special steel. Overall, the demand for special steel is influenced by the specific economic and industrial characteristics of each region.

Q:How is mold steel used in injection molding?: Mold steel is used in injection molding to create the molds or tooling that are used to produce plastic parts. It is a durable and heat-resistant material that can withstand the high temperatures and pressures involved in the injection molding process. The mold steel is shaped into the desired mold design and then used to form the plastic material into the desired shape through injection molding. This allows for the mass production of plastic parts with high accuracy and repeatability.

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